ink

/iล‹k/
noun
  1. 1

    A pigment (or dye)-based fluid used for writing, printing etc.

  2. 2

    A particular type, color or container of this fluid.

  3. 3

    The black or dark-colored fluid ejected by squid, octopus etc, as a protective strategy.

  4. 4

    Publicity.

    โ€œThe TSA has been getting a lot of ink lately.โ€

  5. 5

    Tattoo work.

    syn:paint
  6. 6

    Cheap red wine.

verb
  1. 1

    To apply ink to; to cover or smear with ink.

  2. 2

    To sign (a contract or similar document).

  3. 3

    To apply a tattoo to (someone).

  4. 4

    (of a squid or octopus) to eject ink (sense 3)

Source: https://en.wiktionary.org/wiki/ink